Base station microphone



FIG. 1 is a perspective view of a base station microphone, showing my new design,

FIG. 2 is a top plan view thereof,

FIG. 3 is an elevational view of one side thereof, the opposite side being similar, and

FIG. 4 is a front elevational view thereof. 

The ornamental design for a base station microphone, substantially as shown and described. 